Auxiliary lock for safe and vault doors



seprl 7,1926. y l 1,598,964

C. A. FOWLER AUXILIARY LOCK FOR SAFE AND VAULT DOORS Filed Feb. V10 .1925 5 SheaizliiSl'Lt` 2 sept. 7,1926. l 1,598,964

c. A. FowLER AUXILIARY LOCK FOR SAFE ANDVAULT DOORS Filed Feb. 10, 1925 s seetsLsneet' s f6' A /a i ,2B Jl. 4 /A 3 l' .l [l

60 (l il 5 C' J l/ /5 P sept," 7 192s.

. 1,598,964 C. A. FOWLER f AUXILIARY Loox FOR SAFE AND vAuLT Doons Filed Feb. 10, 1925` 5 Sheets-sheet 4 INVENTDR A TTORNEY y 1,598,964 c. A. FowLER AUXILIARY LOCK FOR SAFE AND VAULT DOORS Filed Feb. 10. 1925 s'sheets-sheet s ALLLMJ r A l INVEToR AT ToRNEY Patented Sept. A7,:17926.

v :1iii11l 1".1sA. Fownnmoi SALT LAKE oi'rY, UTAH.

www weer@ SAFE AND ,MUM DOORS,

Appliegtion letlf E ebrugry This invention relates `to an improvement in auxiliary locks fligeed" especially 01T use und l.tolle operatedV in combination with the looking I neohonisni .foi lvault" und suie doors. l' f One V.object of this invention is 'to provide unl auxiliiiry look whichfloy reus'on of .the @instability and vafioie'lwehs @fthe C Ohj- `meriti-Ile rdsftleaueilery 1.091: @mi be placel tooperate vertically .or horizontally in paralll felatiQIi 'CQ 'a CrQSSblt on af ,Vault Cl'OOl regardless of the looationof Ythe permuta# tion locknnd cross'boltsoolnmonly used on thevault door. Y 'Another object of this :invention is to provide an similiar look conneotedby L rod :to an operating leve-r operated'by u permutation lockfnieohiinisin 'odoptedto cause directly the operution'o'i Athe auxiliary lock in oonibinution with vthe inovenient of the tulnbleis Vandholt of the permutation' lock inA the inoijeinent of looking und unlocking the door. l Another object ofthis invention to provide :in auxiliary look .towork in combina.-l `tionwithj the spucedjholts yon ,a vault door and to' look suidbfolts with; the lookingof the `Vault door. Y

Another object of this invention is'to p ro vide an auxiliary look that will be automatically `thrown in the emergency V locked position when the inein looking ineohonism ,on the door is 'tempered with for uniuthorizedentrance tothe vault.

l Another olofec'tof this invention is to pro- Vide un auxiliary look.v whereby the rmoment thehundle ofthe door lisfinoved downward tonjiove the` voross bolts toA the looked p04 sition, the tunihlers or'. the Combination .will he .nutoniutioully thrown book und .set the lock. I

Anotherolojeot of this invention is'to providean auxiliury look that is ulwayslooked with the looking ofthe p,'erniutzition look und to be further locked or thrown in an Y emergency looked position whenthe main lookin nieehunisrn is broken off the. door.

YViti these and ,other Aobjects in .view .my invention consists of the following arrangeinents of parts' to behere'inatter described andwclaimed. f f .Refelelmebenexlmd t0 the drawings forming o .part of this fipplicetion and tothe the door vtliifioiigli which I the `gross li io,: 1925. senin' No. 8,101.

figures or" reference marked thereon, in which: i 'A l Figure l isv a rView. showing ,thefinside of a vault door with my` invention fop 1lied thereon showingit 'iii onunloclize Hposition.

' .ll`g.2,y isV a section on line2f2 Fig. l. Fig. 3, is i Viewv ,showing` the inside off a Vault door? with iny iniielOn' applied thereon yind showing it a naturel lookedf'position. Fig. 3A isn side View or `the lconnecting Fig. his u view showing theinside of a v ault door `wit-hiny inuention applied thereon ind showing it locked in "emergency position zitter the permutation look has been broken by driving in .the .spindlek Fig. 5. is u ,vieivfofiilperinutution lock f holt in' i looked position.

withtthe cover removed to show ktrilla looking Fig. 6. an Vend ViewA of the d oclring f bolt 1F.

7 ,is'u plan Yiewof gency look.

Fig. 8, is a yside View of Fig. 75

Fig.A 9, isn' roginefntury View of-u youll; door show ingdinliiitl bundle ihrofwin the bolts on the v'door'in 'und 'out ol" e l y 4the lower einerposition.V

' pawl lshowing1 .the holt" undspring for looking and v,holding tne suine in the einer geilt/ 1y fposi'tion.

lever..y 4 Fig. ll,` isan end View oiFig.

Fig. 1 5, :is an enlarged. fragment-airy View of the kconnecting rod showing fthe -oifset therein. Y 'i 'l Sinilur letters and numerals refer to like ports throughout the'severalv Views olf "the drawings. i

The reference character AdllOtP/.S a yNault door, B und B- Afthe leinergency lks *olli-Ced thereon, C'. Q".and Cfthe -c ros li on the door, D L flangeadjgioent vto the olts ...il-1g projefotund operette, dsliotesfthefl Fig. lil, 'is a.. side` View Eoi the operating of a permutation lock, F the locking bolt, G the dog, J' the tuinblers of the permutation lock. .H the cover for the casing. l? denotes the locking catch, L the handle and M the dial on the door.

1 denotes the operating lever, 2 the connecting rod between the operating lever and the auxiliary lock B. 3 denotes the base plate for the upper auxiliary lock B. 4t the lifting rod which connects the upper auxiliary lock B with the lower auxiliary lock B. 5 denotes the base plate of the lower auxiliary lock B', G a drill proof disk which revolves between the casing E and the door plate upon the spindle T.

Having described the parts of my invention will explain the construction and applying the same to a vault door.

The upper auxiliary lock B comprises a base plate 3 secured to the inner face of the door by screws 11, said base plate having an arm projecting upward therefrom with a hole 8 therein near the upper end thereof and a lug 9 projecting from the side of said base plate and integral therewith, said lug having a hole therein in which is placed a pin 11 upon which the locking pawl 12 is pivotally carried and secured thereon by a thumb screw 13.

The locking pawl 12 has a projection'l-t on the lower end thereof and at a right angle therefrom, said project-ion having a hole 14 therein in which is placed an eye bolt 15 the end thereof being riveted to maintain it in said hole tiut not enough to prevent it turning in said hole as it must be journaled therein to turn with the raising and lowering` of the locking pawl 12.

On the upper end of the locking pawl 12 is drilled a hole 17 in which is placed a spring 18 and a bolt 19. The bolt 19 having a` notch 2O in the inner end thereof and the outer end thereof having a tang 21 thereon. On the upper end and at the side of the locking pawl 12 is secured a yoke 16 for supporting the end of a screw 16Y which passes through a hole crosswise of the end thereof and is secured by a thread in a hole in said yoke, said screw to hold the spring within the opening 17 and to support the upper end of the connecting rod 2. The bolt 19 is held within the opening 17 by the arm 10.

Over the lug 9 is placed a spring L10 the inner end thereof being bent and placed within a hole 23 in the base plate 3 the other end thereof being bent at a right angle and placed under the upper end of the locking pawl 12.

The lower auxiliary lock B comprises a base plate 5 secured to the inner face of the door by screws 2G7 said base plate having a lug 27 projecting therefrom and integral therewith, said lug having a pin 29 secured therein upon which is pivotally secured a locking catch 2S. A spring 33 is placed over said lug the inner end thereof beine' nlaced in a hole 33 in the base )late and the other end thereof being bent at a right angle and placed in a hole 31 of the locking catch 2S, thus completing the con struction of the emergency locks.

The emergency lock B can be used in place of the. emergency lock B'l if so desired, thus giving two locks having the emergency tang therein applied to the door.

The casing E of the permutation lock has a bottom 85 thereon and integral therewith, one end thereof-projecting by the end of said casing having a hole 3st Itherein and a lug 36 on the und-er side thereof. On the opposite end from said projection and at the corners thereof are other lugs 3T with holes therein7 said holes to receive screws for securing said casing to the inner face of a vault door, said lugs for holding said casing` away from said door so a drill proof disk 6 can be placed over the spindle 7 and between the casing E and the door.

The cover of the casing has u s lot 38 therein through which passes a pin 39 on the locking bolt F to engage a slot 39 in the operating lever 1.

The operating lever 1 is shaped like a bell crank lever having a slot 39 in the short arm and a hole L10 at the fulcrum bend thereof. The opposite end is bent sidewise at a right angle 4-1 and outward at t2 havinga hole therein to receive the lower end of the connecting rod 2. The hole 40 in the lever 1 is placed over the end of a screw 110 which holds the cover on the casing, a thumb nut 90 is now placed on the screw l0 to pivotally secure the bell crank lever to the casing.

rlhe connecting rod 2 comprising an upper section and a lower section secured together by blocks lll which are riveted thereto and form the required offset to allow the connecting rod to pass between the cross bolts C and C and the door. The upper end of said connecting rod being pivotally secured to the pawl 12 and the lower end thereof being pivotally secured to the operating lever 1.

In the drawings I show one of the standard makes of a permutation lock. To make this lock to comply to my invention I take the bolt F out and place therein my bolt F which has a piece of metal L18 secured thereon to which a pin 89 is secured. rllhe end of said bolt having a notch therein to rel ceive the end of the dog P on the door.

The lifting lever et comprises two sections. On the upper end of the upper section a thread is cut thereon, a pin placed through said section below said thread and a spring 51 placed thereon and said end is then placed through the eye bolt 15 on the locking bolt 12 and secured therein by nuts 51.

The upper section and the lower section of the rod 41 are connected by a fusible link Cil . memes.;

52, thelower end there'f connecting with 'a lower auxiliary lock B link 53 which in turn'fis connectedto the'V "Theyconnecting rodsQ and 4 are made in manyshapes and lengthsso they v can be secured Vat any. place on vthe door regardless ofthe location of. the permutation lock or bolts on the door.` i g 7 .A

In applying the inventionto a vault door the permutation lock that is on theydoor is removed anda drill proof disk havinga hole in the center thereof'is placed over ther spindle 7 the casing E then placed thereon and secured thereto rwith screws through the holes in the bottomtl'iereol.V The bolt F is then removed and my bolt F placed therein. Afterthe permutation lock mechanism has beenv allreplaced within the casing the cover H issecured thereon. The operatingl lever ,is then pivotally secured to the cover H.. The upper edge of' thecasing E hasa staff lsecured thereto over which is placed a lring '55. to which oneendoi a chain 56 is secured while the other end of said chain is secured to a screw 57 secured in the door` face. On the upper endoii said sta is secured oneend of a spring 58 and the other end thereof being secured within a hole 59 tothe operating lever 1. f

Now secure the auxiliaryvlocking bolts B and Bf to the Ytace of thejdoor at thelocation desired-above cross boltsV C4 and C having the cross bolts in the locked position so they. can be marked atthe point of con tact with the lowerr endof the locking pawls 12 and 28. Att-his point a notch .65 and 66 `must be. cut in the bjolts so the ends of the pawls 12 and 18 Awill fit therein. The cross .bolts must be removed from the door for the cutting of the notches.` At the vertical end of the notch .in the cross bolt C is secured a block 60 to reinforce the notch. Be- -fore the block 60 is secured to the cross bolt Cl the bolt mustbeplaced backen the door toits former position kand then the block secured thereon. f

After'the cross bolts B and C have been placed back on the" door, the connecting rod Q is placed back of cross `bolts C and C :the upper end thereof being secured toV `the, pawl `12vr by a screw 16 and the lower endfto the operating' lever 1 and securing rod 4 as described the invention 1s ready Jfor operation.

A rollerGQ is secured to the door face below the disk 6 to prevent said disk from dropping to the iioor of the vault aft-er the spindle has beendriven in or pulled out.

In the operation of my invention; the

movementof bolt 'F Vand auxiliary locks B and B is accomplished by the'direct action of a series of rotarytumblsrs 'J of a permu` tation lock. lAdog G .pivoted at one endto va bolt Fcar'rying at `fthe other end aprojection 63, when the tumblers are arranged ina certain positionit :falls into a'notch or gatefGi' and then when theytumblers are moved they will vthrow `the bolt F and the auxiliary. locks in `an unlocked position as shown in Fig. 1. Y j

' In locking avault door handle L is moved downward 4raising latch P upward andin alineinent with notch 50 releasing bolt F, then spring 58 in coaction with springs 33 and 40. Amove-s operating lever upward, moves bolt Foutward placing notch 50 over catch .P5 raising projection 63 out of notch 64; .allowing it to ride on the periphery of the ltumblers J, turning tumblers at the same time bymeans of the dog G,slightly raising the upper end lof locking pawl 12V by connectingrod 2, placing rlowerend of pawl 12 in notch '65, at the same time lowering locking pawl 2S through the connecting rod 4 intoV the notch 66, by this movement all bolts become locked at the same time. vvhenever t-he..handle L is moved downufard the locks will be placed as shown in To keep the bolts. in an unlockedv In the above movement the vault door i can be kept locked during the daytime. As the combinationtuinblers are only moved slightly and all that is to be done is to move dial h1 `to the .unlocking point and the door can be opened. With my invention on ,a vault doorit is almost impossible for the door tofbe closed on,v any ,one in th-e'vault. Or-to'lock any one in the vault Vin case of robbery. It one should be forced into the vault by ra burglar he would lind the. handle was locked'and helcould not close thev door with the handle inthe downward position.

- In event a robbery was beingcommitted thel vault door being unlocked any one who Y was lable to reach the door could close it. Or in the event people were being driven intofthe vault by a burglar and the cross bolts were not'inftheir locked position rthey could push the handle down and the boltsl would become locked so that door could not be clos-ed.

In the event that the vaultdoor was tam# pered with .to secure entrance thereto by other means. than working the combination',

vsuch as burning, driving in or .pulling out Y the f.spindle, drilling through doorplate to pick the combination lock or to lill with powder to blow the door to remove the per mutation lock, the .action on the yauxiliary locks will be as follows.

ln burning through the door the heat `would soon melt the fusible link 53 `on rod 4; thus allowing the rod to drop down out of arms reach ot' a burglar. In the event that .a burglar was burning out the permutation lock the flame as 'soon as it camein contact with 4the rod 2 would meltit thus Xrel-easing pawl 12 into the emergency position as shown in F 1g. 4.

It the spindle should be driven 1n, cover H would be broken off from casing E, rod 2 would be broken as shown in Fig. el the auxiliary locks would then drop into their emergency locked position.

In case the spindle was drawn out, disk 6 would drop downward to the roller tb us covering the hole in the casing through which the spindle went, thus preventing a burglar from picking the lock.

If a burglar drilled through the face oi the door so he could piek the lock his drill would strike the drill proof disk 6. As the disk revolves on spindle 7 the drill would not be able to get a hold on the disk. And in the event a burglar desired to lill this hole with powder and blow the permutation lock oli1 the door the result would be casing E would be forced `oli3 the door by the explosion, chain 56 connected to stalll 5% and secured to the vault door would prevent the casing pulling the auxiliary locks in their unlocked position, but will give them time to be locked into emergency providing` rod 2 was not broken.

In the event that a burglar drilled a hole through door plate at bolt end of permuta tion lock intending to saw bolt F or catch P in two so the cross bolts C. C and C could be thrown in an unlocked position, he would lind after doing this that the door still remained locked.

To open vault door after auxiliary lock B has been thrown into emergency locked position.

When auxiliary lock B and B are placed on a vault door, a measurement of their location is taken .and placed .away for record. In opening the door this record must be used to give the exact location of the auxiliary locks. At the location ot the upper auxiliary lock a hole is madel through the door to allow the necessary tools to be placed therethrough to remove the tang 21 out of the hole S in arm 10 after so doing the upper end of pawl 12 is moved downward to the position shown in Fig. l to raise the lower end out of notch 65. It connecting` rod d is not broken the lower auxiliary lock will be raised out of notch 66 at the same time that pawl 12 is removed from notch 65. It' rod l is broken a hole will have to be drilled through door tace and a tool placed therethrough to litt pawl 28 out of notch 66 before the door can be opened. After this is done the cross bolts on the door can be moved and the door opened.

After vault door has been opened and all broken parts replaced by new parts all auxiliary locks can be left in the same place or changed to some other location on the door.

lhile the oa-eration of this invention is very similar to my application Filed April 18, 1924 Serial No. 7 07,474, there are many improved features thereof, which, I claim, and desire to secure by Letters Patent, is:

l. An auxiliary lock in combination with a vault door a locking device on the door including a bolt mechanism and a permutation lock mechanism, said permutation lock mechanism having a casing therefor with a removable cover thereon, an operating lever pivotally mount-ed on said cover, a bolt within said casing projecting therefrom having a pin thereon passing through a slot in said cover and engaging a slot in said operating lever to operate said lever when said bolt is operated by said permutation lock mechanism, said bolt having a notch in the outer end thereol1 to engage a catch of said locking device on the door, substantially as described.

2. An auxiliary lock in combination with a vault door having` a flange adjacent to the edge thereof, a locking device for the door ncluding a plurality of spaced bolts arranged to project through said flange and a bar connecting said bolts, an auxiliary lock comprising a base plate carried by the door tace, a locking pawl carried by said base plate, a rod pvotally connected to said aux iliary lock and extending in relation to the door face, a lever pivotally secured to th-e casing ot said combination mechanism, the other end of said rod connected to said lever and means for operating' said auxiliary lock and lever in coaction with the combination mechanism substantially as described.

8. An auxiliary lock in combination with a vault door having a flange adjacent to the edge thereof, a locking` device on the door including a combination mechanism, a plurality of cross bolts arranged to project through said flange and a bar connecting said bolts, an operating lever pivotally secured to the casing of said combination mechanism, said auxiliary lock consisting of a base plate carried on the door plate and a locking pawl pivotally secured thereto, a rod one end thereof pivotally secured to said pawl and the other end thereof pivotally secured to said operating lever, another rod pivotally connecting said pawl with another auxiliary lock secured to said door plate, said rods 't'or operating said auxiliary locks when said operating` lever is operated by said combination mechanism.

4. An auxiliary lock in combination with a vault door a locking device for the door including a` bolt mechanism and a combination mechanism, a base plate mounted on the tace of said door, a locking pawl pivotally mounted on said supporting member` another base plate carri-ed by said door face, another locking pawl pivotally mounted on said other base plate, said locking pawls to engage notches in said bolt mechanism, means for connecting said locking pawls together anism on the'dooi`- and' means operatedlby said combination vmechanisin tor operatingsaid locking-pawls infcoaetion ywith saidfcombination mecha-y nism. Y

5.,*An auxiliary llock in combination yfivith vault door a locking` device on the door ,includingfa bolt'inechanism and a combination mechanism, saidauxiliary lock comprising afbase plate having an arm secured on `the door i'ace, a locking pani `fulcruined on said base plate-,fand adapted, toV engage a slot ina cross bolt on said door, an oper-ating lever fonkeeping said locking'paivl in a co-V inga flange extendingadjacentto the edge atheneof, aloeking device on the door including a' lurality'otbolts arranged to project -tlireugiisaid liange and a bar connecting saidboltsya base plate secured to thel Vdoor plate, appavvl pivotally mounted on said base plateand adapted toengage af slot on a cross boltof said door, ia locking pin in thev uppe end of said pawl operated by a spring With-l 'insaid pawl :foi-holding saidpaivl inyan emergency locked, position -andmeans` in said lbaseplate to engage said pin 4When-said paivl is i inf emergency locked'r position.

v'7. Anauxiliary locking device-in combilnation with a van-lt Ldoor,alocliing device Yfor the door includinga combination `mechanism-and abo'lt mechanism, said combination `mecha'nisni having a casing therefor y With a slidingfbolt thereiinfsaid 'bolt having` a pin e.projeoting therefrom andr passing lthrough.2a slot in said casing yand engaging a slot in an operatingflever pivot-ally con-v nected to saidl casing, 1 said sliding i bolt `and piny for operating said-lever in the movement 'washer' carried by -the islpindlevifor, saidcom- .binationfmechanism anidplaced between said casing and door plate, rollerf mounted on 1. ar holt secured to the/(door plate belovvfsaid asher upon which said Washer rests when `said spindle has beendriven in or pulled out substantially asdescribed. i

8'. Incombination .with a vault ldoor a locking device on the door'including a bolt mechanism and a, combination mechanism, an auxiliary locking devicefor the ,door consisting of a base plate mounted on the door plate, a ylockingpawl pivotally carried by said base plateand adapted to engage a cross bolt of said bolt mechanism, means for moving said locking pawl kinto .aV

.combination rmechanism, means for plac-inCY said locking paWl :in an emergency Vlocke Y position and means for holding-said'pawl in emergency locked position upon the breale ingoi' vthe combination mechanism substantially as described, f

` 9. The combination with a vault door having a plate-Witha viiange adjacenttothe edge thereof lockingd vice on the door fiieluding bolt mechanism Y, arranged to project through said flange and a vbar connecting saidv bolt, a base plate secured to said -v plate, a locking Ypaivl pivotally secured to said base yplate,said locking pavvl having an opening in the upper end thereof, a springand bolt placed Within said opening, said spring to movesaid bolt intheemergency locking position when said locking pairl is orced dovvn by another` spring into a notch in a cross bolt of said locking mech-` anisinwheii the combination mechanismhas been brokenl oit the door.V 1 i l0. Anauxiliary locking device in` combination with a vault 'door' having a flange extendingadjacent to the edge thereof' a locking device on the door including a conrybination mechanism, and: a bolt mechanism arranged to proiect through said lflange and .a Vbar `connecting Asaid' bolt mechanism, a

lever rotating upon a pin secured Vto the casing oi said combination mechanism, said casing havin-g a slidingbolt-therein,4 a pin attached to the side of sliding bolt pass ing through a Yslot'in said cover arranged 'to engage a slotin said lever, said pin for operating said lever in -the -movement of sa-id bolt by the combination mechanism,

said'v casing having af staff Vthereon over Whichis placed an ring having one end of a chain secured thereto, the other end of said Ychain being secured toa bolt in the door face, said chain to prevent said casing tall- `ing-,tothe iioor'ivhen broken oi the door,

therend of said stali3 having one end of a spring attached thereto Vthe, other endof said spring being attached to said lever, said l y Y Vspring 'for operating said lever When a oi the combination mechanism, a drill/proof handlelon the door is downward, a locking pawl: having a base plate secured to said door. in parallel relation to a boltof 4said bolt mechanism, said locking paivl having ally connected to lli) pivot-ally connected to said locking Vpaivl y and to another locking paWl having a base plate secured to said door in parallel relation to another cross bolt of said bolt mechanisin, saidv leverV and rods for operating said auxiliary locks Yin the movement of said combination mechanism and means Jf'or locking said auxiliary locks rinto an emergency position.` i

`lLAn auxiliary locking device in com-V iso bination with a vault door having a flange adjacent to the edge thereof, a locking device on the vdoor including a combination mechanism a plurality of cross bolts arranged to be projected through said flange and a bar connecting said bolts, said auxiliary locking device consisting of a lever pivotally mounted on the casing of said combination mechanism, an operative bolt Within said casing loperated by said combination mechanism, a pin projecting through a slot in the cover of said casing adapted to engage a slot in said lever, a base plate carried on the door, a locking patvl pivotally secured to said base plate, means for supporting said locking paWl on said base plate, a rod connecting said locking pawl With said lever, another base plate secured to the door having another locking pawl supported thereon, a rod pivotally connecting said locking pawls, another rod pivotally connecting one of said locking parvis With said opera-ting lever, said rods and lever for operating said auxiliary locks when said combina-tion mechanism is moved, said locking pavvls placed on said door in parallel relation to the cross bolts on said door and `adapted to be engaged with a notch on said cross bolts, substantially as described.

l2. An auxiliary lock in combination with a vault door having a flange adjacent to the edge thereof a locking device on the door including a combination mechanism and a bolt mechanism arranged to be projected through said flange, said auxiliary loek consisting of a base plate secured to the inside of said door in parallel relation to a cross bolt of said bolt mechanism, a pawl pivotally secured to said base plate, said base plate having a spring mounted thereon for operating said pavvl, said paivl having a hole in the upper end thereof in which is placed a spring and a bolt, said base plate having an arm projecting therefrom upon which slides the end of said bolt when said pawl is operated, means on said arm for receiving the end of said bolt when said paivl is in an eniergency locking position, the lower end of said pawl to fit Within a notch in a cross bolt of said door, and means for operating` said pavwl in the moving of said combination mechanism.

13. The combination with a vault door having a bolt locking mechanism and a combination locking device, an auxiliaryvv locking device comprising a base plate secured to the inner face of the door, said base plate having an arm projecting therefrom With a hole therein near the upper edge thereof, a locking paivl, said base plate having a lug projecting from the face thereof with a pin therein upon which is fulcrumcd said locking paivl, said locking pawl having an eye bolt pivotally secured in the lower end thereof, an emergency locking bolt, the upper end of said locking paivl having a hole therein in which is placed a spring and said emergency locking belt, said spring for operating said bolt, a connecting rod, said spring being secure-d in said hole by a screw one end of said screw pivotally connecting with the upper end of said connecting rod, means pivotally connected to the other end of said connecting rod for operating said auxiliary lock in coaction with the combination mechanism, another connecting rod havino' a fusible link thereon and another linl: on the loiver end thereof, said other connecting rod for connecting said locking pawl v-uith another locking pawl secured to the door face by a base plate, said locking pawls being secured to the door face in parallel relation to cross bolts of the door substantially as described.

le. In combination with a vault door having a flange extending adjacent to the edge thereof, a locking device for the door including a plurality of spaced bolts arranged to project through the flange, and a bar connecting said bolts a combination mechanism and a casing for said combination mechanism, one end of said casing having a projection thereon with a lug thereunder and the other Iend of said. casing at the corners thereof has lugs thereunder, said lugs having holes therein for securing said casing to the door, a cover for said casing having a slot therein through which passes a. pin on the combination locking bolt, a drill proof disk placed between said casing and said door, said disk being supported by a spindle on the door of the combination mechanism, a roller secured to said door below said disk upon which said disk will drop When said spindle has been driven in 'or pulled out substantially as described.

In Witness whereof, I alix my signature,y

CHAR-LES A. FOVLER, 

